/Engine/Plugins/Experimental/Mutable/Source/CustomizableObjectEditor/Public/MuCOE/ExtensionDataCompilerInterface.h
As with MakeStreamedExtensionData, the provided instanced struct will be visible to the GC.
[mu::ExtensionDataPtrConst](API\Plugins\MutableRuntime\MuR\ExtensionDataPtrConst) MakeAlwaysLoadedExtensionData ( [FInstancedStruct](API\Plugins\StructUtils\FInstancedStruct) && Data )